PIC18F4525-E/PT - 8-Bit 48KB Flash MCU, 44-TQFP | Microchip
N.º da peça: PIC18F4525-E/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.21 | $8,21 |
| 10 | $7.65 | $76,50 |
| 100 | $6.85 | $685,00 |
| 500 | $6.1 | $3.050,00 |
| 1.000 | $5.45 | $5.450,00 |
PIC18F4525-E/PT Visão geral
An 8-bit microcontroller (MCU) is a single-chip computer optimized for control-oriented embedded tasks. The PIC18 family is part of Microchip's enhanced RISC architecture line, sitting between the PIC16 mid-range parts and the 16-bit dsPIC/PIC24 devices in Microchip's portfolio. Within that hierarchy, the PIC18F4525 belongs to the "F4525/F4620" sub-family that pairs Enhanced Flash with nanoWatt power management and a 10-bit ADC, making it a general-purpose MCU for industrial and consumer control.
Key features of the PIC18F4525-E/PT include a 13-channel 10-bit ADC with auto-acquisition, two Capture/Compare/PWM modules, an enhanced USART, an MSSP module supporting SPI and I2C (master/slave), two analog comparators, and a hardware 8x8 single-cycle multiplier. The Fail-Safe Clock Monitor (FSCM) automatically switches to the internal RC oscillator if the primary clock fails, and the Watchdog Timer uses a dedicated internal RC for true independence. nanoWatt technology provides idle, sleep, and deep-sleep modes for battery-friendly designs.
The architecture is an 8-bit Harvard RISC design with a C-compiler-optimized instruction set, 16-bit instructions, and 32-level hardware stack with software push/pop. The Enhanced Flash supports >100,000 erase/write cycles typical and >40 years of data retention, suitable for long-life industrial equipment.
Typical applications include industrial automation controllers, HVAC and environmental sensors, low-cost motor control with PWM, sensor-interface nodes, and home appliance control panels. Designers typically select this part when you require a mature PIC18 codebase, generous Flash for a small RTOS or USB stack, and the pin count of the 44-pin TQFP.
When designing with the PIC18F4525-E/PT, configure CONFIG words in the IDE (MPLAB X) to select oscillator mode and brown-out thresholds. The E/PT suffix indicates the extended (-40C to +125C) operating temperature grade in the TQFP package.
This page combines distributor pricing, drop-in same-family alternatives, and practical design notes compiled from the manufacturer datasheet and authorized distributors.
Alternativas drop-in para PIC18F4525-E/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC18F4525-E/PT (mesmo formato e footprint) — diferindo em Package, Operating Temperature, Program Memory (Flash), ADC, Timers.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC18F4525-I/PT
✅ Drop-In✓ Em estoque
$4.18 / unidade
Ver ficha técnica →PIC18F4620-I/PT
✅ Drop-In✓ Em estoque
$5.45 / unidade
Ver ficha técnica →PIC18F4620-E/PT
✅ Drop-In✓ Em estoque
$5.2 / unidade
Ver ficha técnica →PIC18F4525T-I/PT
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.95 / unidade
Ver ficha técnica →PIC18F4520-E/PT
✅ Drop-In✓ Em estoque
$4.3 / unidade
Ver ficha técnica →PIC18F4525-E/PT Classificações máximas e características elétricas
| Product Family | PIC18F |
| Core | 8-bit PIC RISC |
| Program Memory | 48 KB Flash (Enhanced) |
| RAM | 3,384 bytes |
| EEPROM | 1 KB |
| Maximum CPU Speed | 40 MHz / 10 MIPS |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 13-channel, 10-bit |
| PWM Modules | 2 (CCP/ECCP) |
| Communication | 1x EUSART, 1x MSSP (SPI/I2C) |
| Comparators | 2 analog |
| Timers | 4 (Timer0-3) |
| Hardware Multiplier | 8x8 single-cycle |
| Encapsulamento | 44-pin TQFP (10x10 mm) |
| Temperatura de operação | -40 C to +125 C (E grade) |
| Internal Oscillator | 31 kHz to 8 MHz with 4x PLL |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do PIC18F4525-E/PT
| Pino 1 | MCLR/VPP/RE3 — Master Clear (reset) input / programming voltage / PORTE bit 3 |
| Pino 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Pino 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Pino 4 | RA2/AN2/VREF- — PORTA bit 2 / analog input channel 2 / ADC VREF- |
| Pino 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input channel 3 / ADC VREF+ |
| Pino 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pino 7 | RA5/AN4/SS/LVDIN — PORTA bit 5 / analog input / SPI slave select / LVD input |
| Pino 8 | RE0/RD/AN5 — PORTE bit 0 / read signal / analog input 5 |
| Pino 9 | RE1/WR/AN6 — PORTE bit 1 / write signal / analog input 6 |
| Pino 10 | RE2/CS/AN7 — PORTE bit 2 / chip select / analog input 7 |
| Pino 11 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pino 12 | VSS — Ground reference |
| Pino 13 | OSC1/CLKI/RA7 — Crystal oscillator input / external clock input / PORTA bit 7 |
| Pino 14 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| Pino 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pino 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 I/O |
| Pino 17 | RC2/CCP1/P1A — PORTC bit 2 / CCP1 I/O / PWM output 1A |
| Pino 18 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pino 19 | RD0/PSP0 — PORTD bit 0 / parallel slave port bit 0 |
| Pino 20 | RD1/PSP1 — PORTD bit 1 / parallel slave port bit 1 |
| Pino 21 | RD2/PSP2 — PORTD bit 2 / parallel slave port bit 2 |
| Pino 22 | RD3/PSP3 — PORTD bit 3 / parallel slave port bit 3 |
| Pino 23 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pino 24 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pino 25 | RC6/TX/CK — PORTC bit 6 / EUSART TX / EUSART clock |
| Pino 26 | RC7/RX/DT — PORTC bit 7 / EUSART RX / EUSART data |
| Pino 27 | RD4/PSP4 — PORTD bit 4 / parallel slave port bit 4 |
| Pino 28 | RD5/PSP5/P1B — PORTD bit 5 / parallel slave port bit 5 / PWM output 1B |
| Pino 29 | RD6/PSP6/P1C — PORTD bit 6 / parallel slave port bit 6 / PWM output 1C |
| Pino 30 | RD7/PSP7/P1D — PORTD bit 7 / parallel slave port bit 7 / PWM output 1D |
| Pino 31 | VSS — Ground reference |
| Pino 32 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pino 33 | RB0/INT0/FLT0 — PORTB bit 0 / external interrupt 0 / ECCP fault input |
| Pino 34 | RB1/INT1 — PORTB bit 1 / external interrupt 1 |
| Pino 35 | RB2/INT2 — PORTB bit 2 / external interrupt 2 |
| Pino 36 | RB3/INT3/CCP2A — PORTB bit 3 / external interrupt 3 / CCP2 alternate |
| Pino 37 | RB4/KBI0 — PORTB bit 4 / interrupt-on-change bit 0 |
| Pino 38 | RB5/KBI1/PGM — PORTB bit 5 / interrupt-on-change bit 1 / LVP program |
| Pino 39 | RB6/KBI2/PGC — PORTB bit 6 / interrupt-on-change bit 2 / ICSP clock |
| Pino 40 | RB7/KBI3/PGD — PORTB bit 7 / interrupt-on-change bit 3 / ICSP data |
| Pino 41 | VSS — Ground reference |
| Pino 42 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
Aplicações típicas
PIC18F4525-E/PT é adequado para 6 aplicaçãos: Industrial Automation Controller, HVAC Environmental Sensor Node, Low-Cost BLDC / DC Motor Control, Home Appliance Control Panel, Data Acquisition Front-End, Educational Embedded Platform.
Industrial Automation Controller
The PIC18F4525-E/PT is a strong fit for industrial automation controllers because its 48 KB Enhanced Flash accommodates finite state machines and Modbus RTU command tables, while the 13-channel 10-bit ADC scans multiple 4-20 mA loop inputs via external shunt resistors. The E grade -40C to +125C temperature rating handles unventilated control cabinet environments, and the Fail-Safe Clock Monitor recovers gracefully if a clock crystal is damaged by vibration. The 36 I/O pins drive relay coils, opto-isolated inputs, and status LEDs directly. Use the EUSART for RS-485 and the MSSP for SPI I/O expansion to ADC/DAC chips. Power is typically 24 VDC bucked to 5 V or 3.3 V; the 2.0 V to 5.5 V VDD range accepts either rail.
Recomendado
HVAC Environmental Sensor Node
For HVAC environmental sensor nodes, the PIC18F4525-E/PT integrates the ADC, two analog comparators, and EUSART in one 44-pin TQFP, simplifying BOM. The 13 ADC channels read temperature (NTC thermistor via divider), humidity (capacitive sensor via RC time), and airflow (differential pressure) without an external ADC. nanoWatt idle and sleep modes drop quiescent current below typical sensor budgets, making battery- or energy-harvested operation feasible. The MSSP drives an SPI OLED status display; the EUSART reports to a central controller over RS-485. The E grade thermal rating is essential when the node sits in a ceiling plenum above 70C ambient.
Recomendado
Low-Cost BLDC / DC Motor Control
The PIC18F4525-E/PT can drive low-cost BLDC or brushed DC motor stages thanks to its two CCP/ECCP modules generating complementary PWM with programmable dead-band, hardware fault input, and the 10-bit ADC for back-EMF or current sensing via shunt. The 8x8 hardware multiplier handles field-oriented control math in real time at 10 MIPS. The 36 I/O pins support three half-bridges, quadrature encoder input, and direction/disable logic. The E grade thermal rating lets the MCU sit near the FET bridge on the same PCB without derating. For sensorless FOC of small fans and pumps, the 48 KB Flash is ample; for higher-power FOC, scale up to the PIC18F46K22.
Recomendado
Home Appliance Control Panel
In washing machines, dishwashers, and induction cooktops, the PIC18F4525-E/PT drives the segmented LCD or LED display, scans the keypad matrix, and modulates triac-trigger or relay outputs through the CCP PWM and standard I/O. The 48 KB Flash stores appliance state machines and user menus in C18 or XC8; the 3,384-byte RAM holds display buffers; and the 1 KB EEPROM retains the last wash cycle even after power loss. The MSSP slaves to a Wi-Fi module (e.g., ESP32-S3) for IoT retrofit. The E grade thermal rating handles cooking-appliance ambient temperatures up to 125C.
Recomendado
Data Acquisition Front-End
The PIC18F4525-E/PT serves as a low-speed multi-channel data acquisition front-end by exploiting the 13-channel 10-bit ADC at up to approximately 100 ksps aggregate. Acquired samples are timestamped, decimated, and streamed over EUSART to a host PC or over MSSP to an external SD card via SPI. The 3,384-byte RAM serves as a circular sample buffer; the 48 KB Flash stores calibration coefficients and decimation FIR coefficients. The E grade temperature rating and the PIC18F4525's 2.0 V to 5.5 V VDD range allow direct sensing from battery stacks or industrial 24 V rails after resistive scaling.
Recomendado
Educational Embedded Platform
The PIC18F4525-E/PT remains a popular teaching vehicle for undergraduate embedded systems courses due to its 44-pin TQFP with generous I/O breakout, mature MPLAB X IDE support, free XC8 compiler, and abundant student-facing tutorials. Students learn interrupt-driven design with four timers, ADC sampling theory, and peripheral protocols (UART, SPI, I2C) on a single part. The 48 KB Flash fits multi-week labs building a stopwatch, voltmeter, and finally a small RTOS scheduler. Pickit 5 in-circuit debug support makes the PIC18F4525-E/PT fully debuggable without external tools.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC18F4525-E/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC18F4525-I/PT | PIC18F4620-I/PT | PIC18F4620-E/PT | PIC18F4525T-I/PT | PIC18F4520-E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same |
| Flash Memory | 48 KB | 48 KB | 64 KB (+33%) | 64 KB (+33%) | 48 KB | 32 KB (-33%) |
| RAM | 3,384 bytes | 3,384 bytes | 3,968 bytes (+17%) | 3,968 bytes (+17%) | 3,384 bytes | 1,536 bytes (-55%) |
| Temperature Grade | E (-40C to +125C) | I (-40C to +85C) | I (-40C to +85C) | E (-40C to +125C) | I (-40C to +85C) | E (-40C to +125C) |
| Max CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS |
| ADC | 13-ch, 10-bit | 13-ch, 10-bit | 13-ch, 10-bit | 13-ch, 10-bit | 13-ch, 10-bit | 13-ch, 10-bit |
| PWM Modules | 2 (CCP/ECCP) | 2 (CCP/ECCP) | 2 (CCP/ECCP) | 2 (CCP/ECCP) | 2 (CCP/ECCP) | 2 (CCP/ECCP) |
Principais diferenciais
- Same-die I grade alternative for cost-sensitive indoor designs (vs PIC18F4525-I/PT)
- Drop-in 64 KB Flash upgrade on the same footprint (vs PIC18F4620-E/PT)
- Downgrade path for cost reduction when Flash headroom is unused (vs PIC18F4520-E/PT)
Notas de projeto
Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pair on the PIC18F4525-E/PT. The 44-pin TQFP exposes three VDD pins (11, 32, 42) and two VSS pins (12, 31, 41); each VDD must have its own 100 nF cap. Add a bulk 10 uF tantalum or aluminum-polymer cap near the MCU inlet. The PIC18F4525-E/PT's nanoWatt idle and sleep modes require stable VDD; brown-out reset (BOR) should be enabled in CONFIG words to avoid undefined EEPROM writes during supply droop.
Route the ICSP clock (PGC, RB6) and data (PGD, RB7) lines as a 2-wire bus with ground return; keep total length under 75 mm to avoid Pickit 5 programming failures. If using the parallel slave port (PORTD + PORTE), group PSP pins together on one connector edge to minimize bus-stub reflections. The 44-pin TQFP at 0.8 mm pitch requires IPC-A-610 Class 2 stencil apertures of 1:1 pad ratio with 0.1 mm reduction for reliable reflow.
Do not leave the MCLR pin floating - even with the internal weak pull-up selected in CONFIG, add an external 10 kohm pull-up to VDD to ensure reliable reset in noisy industrial environments. The PIC18F4525's ADC requires the A/D acquisition time (Tacq) to be at least 1.4 us; setting ACQT to 8 TAD or 16 TAD covers most impedances. Watchdog Timer postscaler must be cleared by CLRWDT in long loops, or the PIC18F4525 will unexpectedly reset during firmware development. Finally, disable the CONFIG4L LVP bit unless using low-voltage programming - LVP conflicts with RB5 digital I/O.
Informações de conformidade
Microchip PIC18F4525-E/PT is RoHS compliant per distributor listings. AEC-Q100 automotive qualification is not stated; for AEC-Q100 qualified Microchip PIC18 alternatives, select the PIC18F4620-I/P automotive-grade variant or consult Microchip's automotive MCU portfolio. Lead-free reflow profile per JEDEC J-STD-020.